My sister gave me her old laptop, an HP 2000 running Windows 8.1. She hasn’t used it in 3+ years, and she does not remember the password she used. I am unable to bypass the login page, having tried all the password options she could recall ever using. I tried reboot>F11>Troubleshoot>Reset Your PC, but received a message saying “Unable to reset your PC. A required drive partition is missing.” Is there another workaround for this to factory reset or bypass the password screen?